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Six counties in the San Francisco Bay Area on Monday announced a “shelter in place” order restricting all residents to their homes, with few exceptions, for at least the next three weeks — the strictest move announced to date in the U.S. in the response to the coronavirus.

The order will be effective after midnight on Monday evening and last until at least April 7.

The six counties affected by the order — AlamedaContra CostaMarinSan FranciscoSan Mateo, and Santa Clara — have confirmed 258 coronavirus cases, as well as three deaths.

Read more at STAT…